Neelkanth Linga - White Shivling With A Black Dot

Neelkanth Linga is a very rare form of Shivling – naturally
formed and are counted among the Bana Lingas found in the Narmada River. Neelakantha
is pure white in color and what distinguishes it from other white colored Lingas
is a single black dot on it.

This linga
symbolically represents Shiva who drank the poison Halahala that appeared from
Samudra Manthan or Churning of ocean. Shiva got the name Neelkanth or the one with blue throat after this incident.

The description about the linga is only found in a text
credited to Hemadri, a 13th century who wrote books related to murtis,
temple architecture and construction.